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AD795:  Low Power, Low Noise Precision FET Op Amp

The AD795 is a low noise, precision, FET input operational amplifier. It offers both the low voltage noise and low offset drift of a bipolar input op amp and the very low bias current of a FET-input device. The 1014(Ohm) common-mode impedance insures that the input bias current is essentially independent of common-mode voltage and supply voltage variations.

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AD795:  Low Power, Low Noise Precision FET Op Amp

Product Description

The AD795 is a low noise, precision, FET input operational amplifier. It offers both the low voltage noise and low offset drift of a bipolar input op amp and the very low bias current of a FET-input device. The 1014(Ohm) common-mode impedance insures that the input bias current is essentially independent of common-mode voltage and supply voltage variations.

The AD795 has both excellent dc performance and a guaranteed and tested maximum input voltage noise. It features 1 pA maximum input bias current and 250 µV maximum offset voltage, along with low supply current of 1.5 mA max.

Furthermore, the AD795 features a guaranteed low input noise of 2.5 µV p-p (0.1 Hz to 10 Hz) and 11 NV(root)Hz Max noise level at 10 kHz. The AD795 has a fully specified and tested input offset voltage drift of only 3 µV/°C max.

The AD795 is useful for many high input impedance, low noise applications. The AD795J and AD795K are rated over the commercial temperature range of ) 0°C to +70°C.

The AD795 is available in 8-pin plastic mini-DIP and 8-pin surface mount (SOIC) packages.

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  • Low Power Replacement for Burr-Brown
  • OPA-111, OPA-121 Op Amps
  • Low Noise
    - 2.5 µV p-p max, 0.1 Hz to 10 Hz
    - 11 nV/vHz max at 10 kHz
    - 0.6 fA/vHz at 1 kHz
  • High DC Accuracy
    - 250 µV max Offset Voltage
    - 3 µV/°C max Drift
    - 1 pA max Input Bias Current
    - Low Power:
       1.5 mA max Supply Current
  • -3dB Bandwidth: 1.6MHz
  • Slew Rate: 1V/µs
  • Vos: 100µV
  • Ib: 1pA
  • Input Noise (nV/rtHz): 9nV/rtHz
  • Vcc-Vee Supply (V): 8 to 36
  • Iq per Amplifier: 1.5mA
  • # OpAmps per Pkg: 1
  • Operating Temp Range: 0 to +70
  • Packages: SOIC

Pin Configuration Diagram for AD795

AD795 Diagram
Pin Configuration Diagram for AD795

Similar Products

arrow View Full Interactive Product Selection Table
Part# Small Signal Bandwidth Slew Rate Vos Ib V Noise Density Amplifiers Per Package Widest Temp Range (°C)
AD795 1.6MHz 1V/µs 100µV 1pA 9nV/rtHz 1 0 to +70
AD8605 10MHz 5V/µs 20µV 200fA 6.5nV/rtHz 1 -40 to +125
AD8615 23MHz 12V/µs 80µV 200fA 7nV/rtHz 1 -40 to +125
AD8651 50MHz 41V/µs 100µV 1pA 4.5nV/rtHz 1 -40 to +125
AD8510 8MHz 20V/µs 80µV 21pA 7.6nV/rtHz 1 -40 to +85
OP27 8MHz 2.8V/µs 30µV 15nA 3.2nV/rtHz 1 -55 to +125
AD8661 4MHz 3.5V/µs 30µV 300fA 12nV/rtHz 1 -40 to +125
AD8627 5MHz 5V/µs 50µV 250fA 16nV/rtHz 1 -40 to +85
AD8641 3.5MHz 3V/µs 50µV 250fA 27.5nV/rtHz 1 -40 to +125
AD797 8MHz 20V/µs 25µV 250nA 900pV/rtHz 1 -40 to +85
AD8638 1.5MHz 2V/µs 3µV 1pA 59nV/rtHz 1 -40 to +125
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Model
The model number is a specific version of a generic that can be purchased or sampled.

Status
Status indicates the current lifecycle of the product. This can be one of 4 stages:
  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.